Could you build a neural network in Lisp and run it on an original IBM PC? It turns out the answer is yes.

I think this shows that all human progress is some form of answer to the statement "Well, that would be cool, but it's impossible"

Then you took the added steps of making it beautiful and slicing it into easy to understand steps.

A truly beautiful hack. Thank you for sharing.

Thank you for your compliment! It is very encouraging and I appreciate it. I was excited too when I actually got the neural network running on the emulator.